The dog days of the NFL offseason are here, which means players will be lining up at practice and working on their game for the next few months. Teams will be working on everything from pass protection to rushing the quarterback with everything in-between, but these 13 players have one area to focus on improving. From Cam Newton to the NFL's sacks leader in 2016, Vic Beasley Jr., the following list of players need to work Kelvin Benjamin Jerseys on a particular skill set this offseason in order to Greg Olsen Jerseys take the next step this upcoming season.Wentz got off to a great start last season, seemingly putting an end to the conversation about him being a raw prospect who wasn't ready for the NFL. That discussion resurfaced fairly quickly, though, after Wentz began to struggle. His mechanics were the main factor for his bad stretch of games in the middle of the season, and it remains the biggest aspect of his game that he needs to improve. Wentz's footwork is OK – although Star Lotulelei Jerseys he needs to stop pretending his feet are stuck in cement at the top of his drop – but his arm angle can get him into some trouble. His wonky release causes passes to sail on receivers, leading to easy interceptions for safeties over the middle. It's something the Eagles will have to work diligently on this Cam Newton Jerseys offseason.Luck was a prodigy when he came into the NFL – the next big thing. He was a Peyton Manning-type player at Stanford, boasting good size, intangibles and arm talent. The past few years, though, his decision making has been suspect, and not just when throwing the ball. Far too often, Luck puts himself in a position to either get injured or simply take a big shot from a defender. He doesn't like to slide and get out of harm's way, which is why he missed so much time in 2015. This offseason, the Colts' coaching staff has to keep harping on Jonathan Stewart Jerseys the fact that Luck needs to preserve his body.